.box {
  clear: left;
  margin-top: 10px;
        width: 945px;
        height: 288px;
        overflow: hidden;
        position: relative;
        margin-left: 140px;
        float: left;
        /* background-color: antiquewhite; */
      }
      .box ul li {
        float: left;
      }
      .box ul {
        width: 600%;
        position: absolute;
        left: 0px;
        top: 0px;
      }
      .box img {
        width: 945px;
        height: 288px;
      }
      .left {
        width: 50px;
        height: 50px;
        background-color: purple;
        color: #fff;
        text-align: center;
        line-height: 50px;
        position: absolute;
        left: 0px;
        top: 140px;
        opacity: 0.5;
        display: none;
      }
      .right {
        width: 50px;
        height: 50px;
        background-color: purple;
        color: #fff;
        text-align: center;
        line-height: 50px;
        position: absolute;
        right: 0px;
        top: 140px;
        opacity: 0.5;
        display: none;
      }
      .box ol {
        list-style: none;
        position: absolute;
        left: 45%;
        bottom: 2%;
      }
      .box ol li {
        width: 10px;
        height: 10px;
        border: 1px solid aqua;
        border-radius: 10px;
        float: left;
        margin-left: 10px;
      }
      .bg {
        background-color: aqua;
        color: white;
        font-size: 12px;
        text-align: center;
        height: 12px;
        line-height: 12px;
      }
      